Resin impregnated oxide superconductor and process for producing same

(19)

(11)

EP 1 035 593 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	25.02.2004 Bulletin 2004/09

(43)	Date of publication A2:
	13.09.2000 Bulletin 2000/37

(21)	Application number: 00105012.9

(22)	Date of filing: 09.03.2000

(51)	International Patent Classification (IPC)⁷: H01L 39/12, H01L 39/24

(84)	Designated Contracting States:
	AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
	Designated Extension States:
	AL LT LV MK RO SI

(30)

Priority:

09.03.1999 JP 6113599
22.06.1999 JP 17529099

(71)	Applicants:
	INTERNATIONAL SUPERCONDUCTIVITY TECHNOLOGY CENTER Tokyo 105-0004 (JP) Railway Technical Research Institute Kokubunji-shi, Tokyo 185-8540 (JP)

(72)	Inventors:
	Tomita, Masaru, Superconductivity Research Labor. Tokyo 135-0062 (JP) Murakami, Masato, Superconductivity Research Labo. Tokyo 135-0062 (JP)

(74)	Representative: Goddar, Heinz J., Dr.
	FORRESTER & BOEHMERT Pettenkoferstrasse 20-22 80336 München 80336 München (DE)

(54)	Resin impregnated oxide superconductor and process for producing same

(57) There is disclosed an oxide superconductor capable of assuring a high trapped magnetic field and maintaining its performance for a long period of time without being affected by internal or external force such as thermal strain or by corrosive environments. The oxide superconductor comprises a resin impregnated layer incorporated with a filler material having a low value of linear thermal expansion coefficient, or comprises the resin impregnated layer or a resin impregnated layer incorporated with a filler material and covered with a resin layer incorporated with the filler material having a low value of linear thermal expansion coefficient, or comprises an oxide superconductive bulk body having an adhesively covering layer of resin impregnated fabric on the outside surface, or comprises an oxide superconductive bulk body having on the surface thereof a resin or a resin impregnated layer dispersedly incorporated with a filler material. The impregnation of a resin is performed by a method of bringing the resin in liquid form or the resin in liquid form impregnated with a filler material into contact with the bulk body and impregnating the resin into the oxide superconductive bulk body.

Search report